JP7160973B2 - 閉塞デバイス - Google Patents
閉塞デバイス Download PDFInfo
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- JP7160973B2 JP7160973B2 JP2021024226A JP2021024226A JP7160973B2 JP 7160973 B2 JP7160973 B2 JP 7160973B2 JP 2021024226 A JP2021024226 A JP 2021024226A JP 2021024226 A JP2021024226 A JP 2021024226A JP 7160973 B2 JP7160973 B2 JP 7160973B2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12172—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure having a pre-set deployed three-dimensional shape
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
- A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
- A61B2017/12063—Details concerning the detachment of the occluding device from the introduction device electrolytically detachable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3937—Visible markers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3966—Radiopaque markers visible in an X-ray image
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- Neurosurgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
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Description
本出願は、2014年4月30日に出願の米国特許仮出願第61/986,369号明細書及び2014年11月24日に出願の米国特許仮出願第61/083,672号明細書の優先権を主張する。これらの開示は参照によりその全体が本明細書中に援用される。加えて、本明細書中及び上記の参照出願で引用したすべての文書及び参照文献は参照により本明細書中に援用される。
法)で発見することにより行われる。CTスキャンが陰性ではあるものの、破裂動脈瘤がなお疑われる場合、脳及び脊髄を取り囲む脳脊髄液中の血液を検出するために、腰椎穿刺が実施される。
中のこのような閉塞デバイスの弾性メッシュ本体14の直径(x)を示す。当技術分野で受け入れられているように、このような閉塞デバイスの直径は遊離ガス中で測定される。したがって、本発明の目的及び一実施形態においては、閉塞デバイスの弾性メッシュ本体14は動脈瘤10に対して「サイズを大きくされて」おり、したがって、図1A及び図1B並びに図3A及び図3Bに示すように、処置されるべき動脈瘤10の直径(y)よりも大きな直径(x)を有する(すなわち、Φx>Φy)。すなわち、メッシュ本体14が動脈瘤10の頚部22を十分に封止して血餅形成及び/又は動脈瘤10の治癒を引き起こすような状態でサイズを大きくされている限り、直径(y)は、処置されるべき動脈瘤10の最大直径である、又は動脈瘤10の大きな直径のうちの1つである。本明細書中に開示される閉塞デバイスの直径(x)の例示的な範囲は、約6~30ミリメートル(mm)であり、処置されるべき動脈瘤の例示的な直径(y)は、xの値未満である。例えば、閉塞デバイスの直径(x)は、7mm、11mm及び/又は14mmのいずれかである。一実施形態においては、実質的に中実のマーカ16の遠位端34の位置は、弾性メッシュ本体14の両端部からほぼ等距離に取り付けられている。嚢内弾性メッシュ本体14上におけるマーカ16のこのような配置は、本明細書中に開示される閉塞デバイスの完全な回収可能性を提供する。
して広がった構成は、二重(又は二)層24の弾性メッシュ材料である。上述のように、このような弾性メッシュ本体14は、処置されるべき動脈瘤10に比べて「サイズを大きくされて」おり、したがって、メッシュ本体14は、処置されるべき動脈瘤10の直径(y)(すなわち、メッシュ本体14が動脈瘤10の頚部22を十分に封止して、血餅形成及び/又は動脈瘤10の治癒を引き起こすような状態でサイズを大きくされている限りは、処置されるべき動脈瘤10の最大直径、又は大きな直径のうちの1つ)よりも大きな直径(x)を有する。弾性メッシュ本体14の薄型かつサイズを大きくされているという特性は、その、(動脈瘤10の壁に対する本体14の対向圧(opposing pressure)により)動脈瘤10の壁の内部表面に適合する性能を付与し、このため、閉塞デバイスは、少なくとも、動脈瘤10の下部20のみが(すなわち、低体積の平らな状態で)動脈瘤10の壁に沿って拡張し、これにより、動脈瘤10の頚部22を留めるための及び/又は親血管12内で固定するための材料の必要を排除する(及びそれによって、抗凝固療法の必要を最小限にする)。このように、本体14の翼状の広がり及び/又は拡張した広がりは動脈瘤10の内部表面に適合し、動脈瘤10のドームに並置される。このような構成により、動脈瘤10の頚部22の封止、ゆえに、血餅形成及び/又は治癒及び/又は動脈瘤10の縮小が促進され、動脈瘤10のサイズ又は大きさが患者内における疼痛又は他の副作用の原因である場合には特に有利である。このような構成は、また、最小量の弾性メッシュ材料しか必要としないため、動脈瘤10のドーム内の空間を球状に径方向に拡張した状態で塞ぐ又は実質的に塞ぐ必要を排除することから有利である。特に、動脈瘤10は形状が完全な球形ではないことは周知であるとともに一般に認められていることから、このような閉塞デバイスは、広範な動脈瘤10の形態への適合に適している。また、「最小限の」材料、又は現在の標準的なデバイスに比べてより少ない材料を有する、本明細書中に開示される閉塞デバイスは、抗凝固療法の必要を最小限にする及び/又は血管樹内に深く流れ込み卒中を引き起こす可能性のある血餅塞栓形成のリスクを低下させることから有利である。
構成は、また、末梢動脈又は静脈閉塞のために、動脈瘤10の壁又は血管壁に対し、デバイスの本体14の十分な並置を提供する。現在までの動物研究に基づくと、本明細書中に開示されるデバイスが、急性的に血行静止を付与するほどの十分なメッシュ密度を提供することは明白である。更に、留置後のデバイスの分析に基づくと、ワイヤメッシュ/編組の分配は比較的均一なままであることは知られている。
いずれかの深化及び/又は平坦化を示す。この幅の変化/直径(x)の増加は、動脈瘤10の頚部22を横断して分配された本体14に血液が圧を印加する際における、留置されたデバイスの効果的なアンカリング機能である。本明細書中に記載される動物研究の結果は、周方向に折り返された/二重層24構成は、末梢動脈又は静脈閉塞のために、動脈瘤10壁又は血管に対する、デバイスのメッシュ本体14の効率的な並置を提供することを支持している。
トン類、ポリウレタン類、ポリラクチド類、ポリカーボネート類、ポリアミド類及び/又はこれらの組み合わせなどのポリマー類が挙げられるが、これらに限定されない。(例えば、J Polym Sci B Polym Phys. Author manuscript;PMC 2012 June15において入手可能、を参照のこと。)
の可視化のためのメッシュの放射線不透過性特性は維持される。このようなデバイスを形成する金属ストランドとしては、ステンレス鋼、金、白金、白金/イリジウム、ニチノール及び/又はこれらの組み合わせが挙げられるが、これらに限定されない。このデバイスを形成するポリマーストランドとしては、ナイロン、ポリプロピレン、ポリエステル、テフロン(登録商標)及び/又はこれらの組み合わせが挙げられ得る。更に、メッシュ材料のポリマーストランドは、ポリマーストランド上への金蒸着を用いることによる、又はポリマーストランド上への適切な金属イオンのイオンビームプラズマ蒸着を用いることによるものなどであるが、これらに限定されない周知の技術によって化学的に改質しそれらを放射線不透過性にすることができる。
れない限りは、その同じ及び/又は類似の構成を採る傾向がある。
非離脱式閉塞デバイスロット30680、離脱式閉塞デバイスロット30676、動脈瘤の大きさ4.5ミリメートル(mm)(高さ)x幅2.5。
非離脱式閉塞デバイスロット30680、離脱式閉塞デバイスロット30676、動脈瘤の大きさ高さ10mmx幅4mmx頚部3mm。
ハブ上の「段」によりデバイスを保持したことに留意されたい。デバイスを配置し、前と同様、定期的な血管造影の実施を行った。留置直後、動脈瘤内にいくらかの血流の減少が認められた。留置後5分で、動脈瘤嚢内の充填不足が認められた。留置後10分で、充填不足の大きさの増加が認められた。
離脱式デバイスロット30676、動脈瘤の大きさ6.5mmx幅3.1mmx頚部2.4mm。
この一連の血管造影像では、本明細書中に開示される閉塞デバイスのワイヤメッシュ編組構成が動脈瘤内の血流を低下するほど十分に密であり、血液の血行静止及び動脈瘤嚢内の血栓に至っていることが確認された。動物の形態のばらつきを考慮した本研究により、デバイスの開発及びその留置手法の理解及び考慮が可能となった。
Claims (18)
- 血管内の動脈瘤を治療するための植え込み型デバイスであって、
(a)近位端及び遠位端を有するマーカと、
(b)送出形状と、前記動脈瘤の壁に対して面一に配置され、少なくとも、前記動脈瘤の内部表面を覆い、前記動脈瘤の頚部を封止するように配置される、留置形状とを有する弾性メッシュ本体と、
を有する、ワイヤー上に配列された閉塞配置を含み、
前記弾性メッシュ本体は、弾性メッシュの二重層である、
植え込み型デバイス。 - 前記弾性メッシュ本体の留置形状は、動脈瘤ドームに隣接できる、請求項1に記載の植え込み型デバイス。
- 前記本体は、動脈瘤頚部を封止することができる、請求項1に記載の植え込み型デバイス。
- 前記マーカは、放射線不透過性マーカである、請求項1に記載の植え込み型デバイス。
- 前記マーカは、前記植え込み型デバイスを留置するための離脱接続部である、請求項1に記載の植え込み型デバイス。
- 前記マーカは、剛性部材を含む、請求項4に記載の植え込み型デバイス。
- 前記マーカは、リングである、請求項6に記載の植え込み型デバイス。
- 身体外で前記弾性メッシュ本体が、処置されるべき動脈瘤又は血管の直径よりも大きな直径を有し、身体外で前記弾性メッシュ本体が、その幅の10~20%である高さを有する、請求項4に記載の植え込み型デバイス。
- 身体外で前記弾性メッシュ本体が、その幅の12~18%である高さを有する、請求項4に記載の植え込み型デバイス。
- 身体外で前記弾性メッシュ本体が、その幅の14~16%である高さを有する、請求項4に記載の植え込み型デバイス。
- 身体外で前記弾性メッシュ本体が、その幅の15%の高さを有する、請求項4に記載の植え込み型デバイス。
- 前記弾性メッシュ本体の前記留置形状が、前記動脈瘤のドーム領域の前記内部表面領域の40%~80%を覆う、請求項4に記載の植え込み型デバイス。
- 前記弾性メッシュ本体は、形状記憶合金を含む、請求項1に記載の植え込み型デバイス。
- 前記弾性メッシュ本体は、医用高分子材料を含む、請求項1に記載の植え込み型デバイス。
- 前記弾性メッシュ本体は、放射線不透過性金属ストランドで形成される、請求項1に記載の植え込み型デバイス。
- 前記弾性メッシュ本体は、実質的に平行なストランドの2つ以上のセットを含み、平行なストランドの1つのセットは、平行なストランドのもう一方のセットに対して45度~135度のピッチである、請求項1に記載の植え込み型デバイス。
- 身体外で前記弾性メッシュ本体は、その幅の10~20%である高さを有する、請求項1に記載の植え込み型デバイス。
- コイルが巻かれたコアワイヤは、前記マーカの内部または前記マーカの前記遠位端で取り付けられる、請求項1に記載の植え込み型デバイス。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022164527A JP2022188259A (ja) | 2014-04-30 | 2022-10-13 | 閉塞デバイス |
| JP2024099257A JP2024125345A (ja) | 2014-04-30 | 2024-06-20 | 閉塞デバイス |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201461986369P | 2014-04-30 | 2014-04-30 | |
| US61/986,369 | 2014-04-30 | ||
| US201462083672P | 2014-11-24 | 2014-11-24 | |
| US62/083,672 | 2014-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2019145966A Division JP6841874B2 (ja) | 2014-04-30 | 2019-08-08 | 閉塞デバイス |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2022164527A Division JP2022188259A (ja) | 2014-04-30 | 2022-10-13 | 閉塞デバイス |
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| Publication Number | Publication Date |
|---|---|
| JP2021090803A JP2021090803A (ja) | 2021-06-17 |
| JP7160973B2 true JP7160973B2 (ja) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2017508761A Active JP6571760B2 (ja) | 2014-04-30 | 2015-04-29 | 閉塞デバイス |
| JP2019145966A Active JP6841874B2 (ja) | 2014-04-30 | 2019-08-08 | 閉塞デバイス |
| JP2021024226A Active JP7160973B2 (ja) | 2014-04-30 | 2021-02-18 | 閉塞デバイス |
| JP2022164527A Pending JP2022188259A (ja) | 2014-04-30 | 2022-10-13 | 閉塞デバイス |
| JP2024099257A Pending JP2024125345A (ja) | 2014-04-30 | 2024-06-20 | 閉塞デバイス |
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| JP2017508761A Active JP6571760B2 (ja) | 2014-04-30 | 2015-04-29 | 閉塞デバイス |
| JP2019145966A Active JP6841874B2 (ja) | 2014-04-30 | 2019-08-08 | 閉塞デバイス |
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|---|---|---|---|
| JP2022164527A Pending JP2022188259A (ja) | 2014-04-30 | 2022-10-13 | 閉塞デバイス |
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| IL (1) | IL248515A0 (ja) |
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